在2型糖尿病中,β细胞代谢的独特特征会消失
Felipe Muñoz1, Malin Fex1, Thomas Moritz2
1Clinical Research Center, Department of Clinical Sciences in Malmö, Lund University Diabetes Centre, Lund, Sweden.
Acta physiologica (Oxford, England)
|April 24, 2024
概括
胰腺β细胞通过独特的遗传和代谢程序调节血糖. 该计划的改变有助于2型糖尿病 (T2D),并突出治疗目标.
科学领域:
- 细胞的新陈代谢
- 内分泌学 在内分泌学.
- 分子生物学分子生物学
背景情况:
- 胰腺β细胞对于葡萄糖平衡至关重要,能够感知血糖并分泌胰岛素.
- 适当的β细胞功能对于维持生理葡萄糖水平至关重要.
- 贝塔细胞具有独特的遗传和代谢程序,用于营养感应和胰岛素分泌.
研究的目的:
- 审查贝塔细胞独特的遗传和代谢特征.
- 概述2型糖尿病 (T2D) 中这些特征的变化.
- 强调了解这些特征对T2D病理生理学和治疗学的重要性.
主要方法:
- 对有关β细胞遗传学和新陈代谢的现有文献的综述.
- 在β细胞 (例如,GCK,LDHA,MCT1) 中分析特定基因表达模式.
- 讨论独特的生物能特性,包括供应驱动的新陈代谢和线粒体质子泄漏.
主要成果:
- 贝塔细胞表现出选择性基因表达,包括高GCK表达和低LDHA和MCT1.
- 这些遗传特征 (特征) 创造了一个独特的代谢装置,用于感知营养和释放胰岛素.
- 贝塔细胞表现出专门的生物能量,如供应驱动的新陈代谢和高基底线粒体质子泄漏.
结论:
- 贝塔细胞独特的遗传和代谢特征对于预防高血糖和低血糖至关重要.
- 这种专门程序的改变有助于T2D中的β细胞功能障碍.
- 了解这些机制对于开发新型T2D疗法至关重要.
相关概念视频
Carbohydrate Metabolism
11.1K
Carbohydrates are polymers composed of molecules containing atoms of carbon, hydrogen and oxygen. One gram of carbohydrate can provide four kilo-calories of energy, which makes it the most efficient instant energy source.
Starch accounts for approximately 60% of the carbohydrates consumed by humans. Since amylase enzymes cannot function in the stomach's acidic environment, starch can only be digested in the mouth and small intestine. Simple sugars are found naturally in milk and fruits in...
Starch accounts for approximately 60% of the carbohydrates consumed by humans. Since amylase enzymes cannot function in the stomach's acidic environment, starch can only be digested in the mouth and small intestine. Simple sugars are found naturally in milk and fruits in...
11.1K
Diabetes Mellitus: Overview and Type I Subtype
2.6K
Diabetes mellitus is a chronic metabolic disorder characterized by high blood glucose levels due to inadequate insulin production, insulin resistance, or both. The condition affects millions worldwide and can significantly impact their health and quality of life.
Type 1 diabetes is an autoimmune disease in which the immune system mistakenly attacks and destroys the insulin-producing beta cells in the pancreas. As a result, the body is unable to produce sufficient insulin, and individuals with...
Type 1 diabetes is an autoimmune disease in which the immune system mistakenly attacks and destroys the insulin-producing beta cells in the pancreas. As a result, the body is unable to produce sufficient insulin, and individuals with...
2.6K
Pathophysiology of Diabetes
922
Diabetes mellitus is a chronic metabolic disorder characterized by hyperglycemia. The four categories of diabetes are type 1 diabetes, type 2 diabetes, other specific types of diabetes, and gestational diabetes.
Type 1 diabetes is characterized by autoimmune-mediated destruction of pancreatic β cells, with environmental factors potentially triggering this process in genetically susceptible individuals. Despite many not having a family history, certain genes increase susceptibility,...
Type 1 diabetes is characterized by autoimmune-mediated destruction of pancreatic β cells, with environmental factors potentially triggering this process in genetically susceptible individuals. Despite many not having a family history, certain genes increase susceptibility,...
922
Diabetes Mellitus: Type 2 and Gestational
2.3K
Type 2 diabetes, characterized by insulin resistance, arises when the insulin receptors on cells lose responsiveness to insulin, diminishing the cell's capacity to take up glucose, resulting in elevated blood glucose levels. To receive a diagnosis of Type 2 diabetes, a series of blood glucose tests are necessary to assess whether the blood glucose falls within normal parameters. If the result is out of the normal range, a patient may be diagnosed as prediabetic or diabetic, depending on the...
2.3K
Diabetes: Symptoms, Diagnosis, and Complications
526
For most patients, experiencing several weeks of polyuria, polydipsia, fatigue, and significant weight loss may indicate the presence of diabetes. Furthermore, adults displaying the phenotypic appearance of type 2 diabetes (particularly those who are obese and not initially insulin-requiring), may have islet cell autoantibodies, suggesting autoimmune-mediated β cell destruction and a diagnosis of latent autoimmune diabetes of adults (LADA). The categorization of glucose homeostasis is...
526
Overview of Carbohydrate Metabolism
964
Carbohydrate metabolism is a fundamental biochemical process that ensures a constant supply of energy to living cells. The most important carbohydrate is glucose, which can be broken down via glycolysis to enter into the Krebs cycle and eventually lead to the production of ATP through oxidative phosphorylation.
Glucose transport into cells is facilitated by a family of transport proteins called GLUT (Glucose Transporters). GLUT4 is the primary glucose transporter for insulin-stimulated glucose...
Glucose transport into cells is facilitated by a family of transport proteins called GLUT (Glucose Transporters). GLUT4 is the primary glucose transporter for insulin-stimulated glucose...
964


